Xiaomi APN Keeps Resetting Automatically Fix

Xiaomi APN Keeps Resetting Automatically Fix – UK Guide

This guide helps if your Xiaomi APN settings keep resetting to default, disappearing, or changing after restart, SIM change, or HyperOS update on UK networks.

Quick Answer:
If your APN keeps resetting on Xiaomi, first check for duplicate user-created internet APNs and keep only one. Then, if your carrier allows custom APNs, create a new APN with a different name (e.g., "My Internet" or "UK Mobile") – on some networks, this can reduce the chance of automatic overwrites. If the issue persists, contact your carrier to check whether automatic APN updates are affecting your device.

Applies to Redmi, POCO and Xiaomi Phones

This guide applies to Xiaomi, Redmi and POCO devices running MIUI or HyperOS on all UK carriers – EE, O2, Vodafone, Three, and their MVNOs.

🔍 Quick Diagnostic Table

What you see	What it usually means
APN resets after reboot	Multiple APN conflict or carrier OTA
APN resets after HyperOS update	Update resetting settings
APN disappears entirely	Carrier provisioning or SIM issue
APN changes automatically	Carrier automatic APN push
APN resets only on one SIM	SIM slot or profile issue

🔍 Quick Start – Find Your Path

Symptom	Most Likely Cause	Go To
APN resets after reboot	Multiple APN conflict	Section 1
APN resets after update	Settings reset	Section 2
APN changes automatically	Carrier OTA push	Section 3
APN disappears entirely	SIM or provisioning	Section 4
APN resets only on one SIM	SIM slot or profile	Section 5

Section 1 – APN Resets After Reboot (Most Common)

If your APN settings reset every time you restart your phone, the most common cause is multiple APN profiles or incorrect selection.

Try these in order:

1. Delete duplicate user-created internet APNs if you have more than one – Settings → SIM cards & mobile networks → [Your carrier] SIM → Access Point Names → identify and remove extra internet APNs. Do not remove carrier-managed APNs such as IMS or MMS profiles.
2. Select your preferred APN – Tap the dot next to the APN you want to use.
3. If your carrier allows custom APNs, create a new APN with a different name – Tap "New APN" → enter correct APN values for your carrier, but change the Name field to something like "My Internet" or "UK Mobile" (not the carrier's default name). Save and select it.
4. Restart your phone – Check if the APN stays after reboot.

Why this works: Some users have reported that a custom APN name is less likely to be replaced during automatic carrier provisioning, although results vary depending on the carrier and device.

Section 2 – APN Resets After HyperOS Update

If APN settings reset after a system update, the update may have cleared or overwritten them.

Try these in order:

1. Reset APN to default – Settings → SIM cards & mobile networks → [Your carrier] SIM → Access Point Names → three dots → Reset to default → Restart.
2. Check your APN is selected – After reset, ensure the dot is next to your carrier's APN.
3. If your carrier allows custom APNs, create a custom-named APN – Section 1.
4. Check system app updates – Settings → System app updater → check for updates to carrier-related apps.
5. Restart after update – Some settings apply only after a reboot.

Section 3 – APN Changes Automatically (Carrier OTA Push)

Some UK carriers automatically update APN settings through SIM provisioning or carrier configuration, which can overwrite manual changes.

Try these in order:

1. Check whether the APN automatically changes back immediately after enabling mobile data – Some OTA pushes occur when mobile data is turned on, not just at boot.
2. If your carrier allows custom APNs, create a custom-named APN – Section 1.
3. Contact your carrier – Ask whether automatic APN provisioning is affecting your device. Most UK carriers cannot disable automatic APN updates, but they may be able to confirm whether the behaviour is expected or refresh your network profile.
4. If they can't help – You may need to accept the carrier's default APN settings – manual changes won't stick.
5. Test with a different SIM – If possible, test a SIM from a different carrier to see if the issue is carrier-specific.

Section 4 – APN Disappears Entirely (SIM or Provisioning)

If APN settings disappear completely, the issue is likely SIM or carrier provisioning.

Try these in order:

1. Reinsert SIM – Power off → remove SIM → clean contacts → reinsert firmly → restart.
2. Reset APN to default – Settings → SIM cards & mobile networks → [Your carrier] SIM → Access Point Names → three dots → Reset to default.
3. Test the SIM in another unlocked phone – This quickly identifies whether the issue is SIM-related or a HyperOS problem.
4. Check SIM age – Very old SIM cards can occasionally cause provisioning issues. If your SIM is several years old and other troubleshooting fails, ask your carrier whether a replacement SIM is recommended.
5. Check carrier provisioning – Call your carrier and ask them to refresh your network provisioning or SIM profile.

Section 5 – APN Resets Only on One SIM (Dual SIM or Slot Issue)

If APN resets only on one SIM, the issue is likely SIM slot or profile.

Try these in order:

1. Swap SIM slots – Power off → move the problematic SIM to the other slot → power on → check if APN stays.
2. Check SIM age – One SIM may be older than the other. Request a replacement for the older SIM.
3. Set the affected SIM as default for data – Settings → SIM cards & mobile networks → Default for mobile data → Select the affected SIM.

Why Does APN Keep Resetting?

• Multiple APN conflicts (most common) – Duplicate APNs or incorrect selection can cause the phone to revert.
• Carrier OTA updates (common) – Some UK carriers automatically update APN settings through SIM provisioning or carrier configuration.
• HyperOS updates (less common) – System updates can reset carrier settings.
• Carrier configuration updates – Some devices receive updated carrier settings through Google Carrier Services, Xiaomi system components, or carrier configuration updates.
• SIM Toolkit or carrier profile refresh – Installing a new SIM profile or changing mobile network settings can cause the phone to reload the carrier's default APN configuration.
• SIM or carrier profile (rare) – Old or faulty SIMs can cause APN instability.

⚠️ What NOT to Do

• Don't factory reset your phone – This is rarely needed for APN issues.
• Don't assume your SIM is faulty without testing – Test your SIM in another phone first.
• Don't ignore carrier-side issues – If the carrier is pushing APN updates, no phone setting will permanently fix it.

Quick Questions

Why does my APN keep resetting on Xiaomi?
Most commonly you have multiple APN conflicts, or your carrier is pushing automatic updates. Delete duplicate user-created internet APNs first – this fixes many cases. If that doesn't work, try the custom APN name.

How do I stop my carrier from resetting my APN?
If your carrier allows custom APNs, create a new APN with a different name (e.g., "My Internet" instead of the carrier's default name). On some networks, this can help prevent automatic overwrites. If still resetting, contact your carrier to check whether automatic APN updates are affecting your device.

Why does my APN reset after reboot but not during use?
This is usually a multiple APN conflict. Check for duplicate user-created internet APNs and delete extras.

Can HyperOS updates reset APN settings?
Yes. Some HyperOS updates reset carrier settings. This usually happens once, not repeatedly. If it keeps happening, try the custom APN name fix.

Will resetting network settings fix APN resets?
It can, but it's a last resort. Try deleting duplicate APNs and the custom APN name first – they fix most cases without losing saved Wi-Fi passwords.

Why does my APN keep changing back to EE automatically?
EE, like many UK carriers, automatically pushes APN settings to ensure correct network configuration. Try creating a custom-named APN or contact EE to ask whether automatic APN updates can be reviewed on your account.

Why won't my custom APN save on Xiaomi?
This usually happens if the carrier is overriding the APN or if there's a duplicate APN conflict. Try deleting all APNs first, then create the custom APN and restart immediately after saving. Some carrier-managed APNs are intentionally locked and cannot be edited – in that case, create a new APN instead of trying to modify the existing one.